Florida Grade 6 Math · Number Sense and Operations

MA.6.NSO.2.1: Multiplying and Dividing Decimals

What this Grade 6 benchmark means, worked examples, common mistakes, and a free printable worksheet.

Created by a Florida mom · Published by Tropical Learning LLC

What Is Benchmark MA.6.NSO.2.1?

Students multiply and divide positive decimals to the thousandths with procedural fluency, including the standard algorithms. The numbers have no more than 5 digits in total.

To multiply, multiply as whole numbers and then place the decimal point: the product has as many decimal places as the factors combined. To divide by a decimal, multiply both numbers by 10, 100, or 1,000 so the divisor is a whole number.

Official benchmarkMultiply and divide positive multi-digit numbers with decimals to the thousandths, including using a standard algorithm with procedural fluency.

On the FAST test: part of the Grade 6 reporting category Number Sense and Operations, which is about 33–42% of the test.

Worked Examples

Worked Example 1

Multiplying Decimals

3.75 × 2.4
  1. 1Multiply as whole numbers: 375 × 24 = 9,000
  2. 2The factors have 2 + 1 = 3 decimal places, so the product has 3: 9.000
  3. 33.75 × 2.4 = 9
Answer: 9

Worked Example 2

Dividing by a Decimal

16.38 ÷ 0.6
  1. 1Multiply both numbers by 10 to make the divisor whole: 163.8 ÷ 6
  2. 2163.8 ÷ 6 = 27.3
Answer: 27.3

Common Mistakes to Watch For

Placing the decimal point in the wrong spot

Wrong:1.2 × 0.3 = 3.6

12 × 3 = 36, and there are 2 decimal places in all: 1.2 × 0.3 = 0.36.

Moving the decimal point in only the divisor

Wrong:4.8 ÷ 0.4 = 1.2

Multiply both numbers by 10: 48 ÷ 4 = 12.

Helpful Math Tip

Estimate first: 3.75 × 2.4 is about 4 × 2 = 8, so an answer of 0.9 or 90 can't be right.

Related Grade 6 Skills

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Independent Educational Platform. FastChomp is published by Tropical Learning LLC and is not affiliated with, sponsored by, or endorsed by the Florida Department of Education. FAST and Star assessment names are referenced for informational purposes only. FastChomp practice questions are original educational materials, not official Florida FAST assessment questions.